A well-planned deck requires more than just boards and screws. In this guide we cover everything from the first measurement to the last screw, so you avoid costly mistakes and end up with a result you can be proud of.
Start by measuring the area where the deck will be built, and check whether the ground slopes away so water can drain. Decide if you will use a subframe, edge joists, or build directly on the ground. Gather the tools you need: spirit level, tape measure, saw, drill/driver and possibly a drill bit for pilot holes. Good planning saves time and materials later on.
Calculate the number of deck boards based on the deck width and the board width including spacing. Remember that joists should be placed at appropriate intervals (typically 40–50 cm / 16–20 in). Screws: allow 2 per board per joist, and always buy a few extra. Use the MyPlanDIY deck calculator to get an accurate material list without buying too much or too little.
Deck materials can vary greatly in price depending on the type and quality of wood. Set a budget that includes boards, joists, screws, subframe materials and any edge trims. Don't forget delivery and any tool purchases. Use the renovation budget tool to keep track of costs, and add 10–15 % for unexpected expenses.
Many people lay boards too tightly without spacing, which leads to moisture and mould. Others forget to slope the subframe so water pools on the surface. Incorrect or missing wood treatment means faster deterioration. Ensure good ventilation under the deck and use screws rated for outdoor use. A construction material list helps you remember everything.
With MyPlanDIY you can combine your material list, budget and tasks in one project. Add materials from the deck calculator, update prices when you get quotes, and generate a printable shopping list for the hardware store. That way you have everything in one place and avoid forgetting anything. Also see the deck calculator, material list and renovation budget for the full overview.
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